Xiao Chaihu Tang has the efficacy of conciliating Shaoyang (treating external fever with evil between half-expression and half-li), and low fever belongs to the category of internal heat in traditional Chinese medicine, so Xiao Chaihu Tang can be used for treating external low fever under the guidance of physicians. Xiao Chaihu Tang is a conciliatory Shao Yang agent, composed of Chaihu, Scutellaria baicalensis, Jiang Hanxia, Radix et Rhizoma Ginseng, Ginger, etc. It is commonly used in the treatment of Shao Yang syndrome of typhoid fever, which is characterized by cold and heat exchanges (the body is hot for a while and cold for a while), bitter fullness in the chest (the chest feels full and uncomfortable in the front and both sides of the chest), heartburn, vomiting and bitter and dry throat, etc. It can also be used for the treatment of heat entering the blood chamber syndrome. It can also be used to treat the syndrome of heat entering the blood chambers, which is characterized by a woman’s stroke, menstrual flow being interrupted, and attacks of heat and cold. It can also be used to treat malaria, jaundice, and internal injuries and miscellaneous diseases with Shaoyang syndrome. Its contraindications and adverse reactions are not clear, pay attention to avoid eating spicy and greasy products during the period of taking the medicine. If there is a low fever, it is recommended to go to the hospital in a timely manner under the guidance of a physician for treatment, do not self-medication in order to avoid delaying the condition.